But that doesn't mean -- going back to the sort of overall premise of his speech -- that we can't or shouldn't continue to make progress to deal with what is an important issue and a priority of his.

WHITEHOUSE: Press Briefing

"We're going to continue to stand our ground, " he told a business group in a speech in Seoul Friday, saying the U.S. doesn't bluff on security matters.

WSJ: U.S., South Korea Offer North Talks, and a Warning

"Some weapons are so dangerous and some ammunition devices so lethal that we simply cannot afford to continue selling them in our state, " he said during his State of the State speech.

BBC: Obama 'determined' for action on gun crime, Biden says